#coding:utf-8
def sanitize(time_string):
    if "-" in time_string:
        spliter = "-"
    elif ":" in time_string:
        spliter = ":"
    else:
        return time_string
    min,sec = time_string.split(spliter)
    return (min + "." + sec)
'''
主逻辑：1、if or elif +  min,sec = time_string.split(spliter)+return (min + "." + sec)
       2、return time_string
'''

